Mechanical razor



'1. W. HALERMAN.

MECHANICAL RAZOR.

APPLlcATloN FILED Nov. 2, |916.

Patented Mar. 2, 1920.

L. .1. USS... 71,

WITNESS. l EIM/554% MUM@ J' OHN W. HALTERMAN, OF WILLOWS, CALIFORNIA.

MECHANICAL RAZOR.

Specication of Letters Patent.

Patented Mar.2,192o.

Application filed November 2. 1916. Serial No. 129,105.

' this application.

This invention relates to improvements in razors, the object of thepresent invention being to produce a mechanical razor of a vibratory orreciprocatory type in which there are two cutting edges each providedwith minute teeth. These blades are arranged to vibrate very Slightlybut in a very rapid manner. The cutting edges co-act in such a manner asto shear'the hair of at the lowest possible point at which the ordinarymanually operated razor could possibly engage and cut the hair. Thislatter action I accomplish by means of makin the teeth of the cuttingedges of only t at depth and breadth approximately equal to thediamrpter of a hair. )Ried th d he razor is ro wi a lar or other meanswhibh smoothes the out ahead of the razor so it may slide the moreeasily over the skin. When the skin resumes its normal position afterthe razor has been used, a microscopic examination of the same will showthe hair to be cuty oit evenly with or slightly below the actual surfaceof the skin.

The teeth of my improved cutting edges while very`minute in size will bebuilt of very substantial and lasting material and will be almostindestructible because of the extremely easy shearing of the hair andthe relatively great strength of the cutting edges which w1ll be of'tempered steel. The teeth are so very minute that the contact of the.same with the skin seems almost continuous and the feeling of thecutting edges against the skin is not unlike that of the ordinary t e ofmanually operated razors.

A still rther object of the invention is to hold the blades in properrelative position by a rigid adjustment which fixes or determines theirexact movement without having any tension between the two. This willrelieve the strainwhich would be continuous if a spring tension meanswere employed.

I am well aware that two co-acting toothed shearin blades have been usedin many forms of s earin devices, particularly barbers clippers an thelike. None of these however have ever been adapted to the "purpose ofshearing the hairs of the face as efficiently as can be done withmanually operated razors. l fter a great deal of careful study, I h vediscovered that by constructing two razor blades with m new teeth andarranging to vibrate the lades slightly but Very rapidly with respect toeach other, and by having the teeth of substantially the same diameteras the average hairs to be cut, that this form ofstructure is veryelicient for the purposeof shaving the face with a shearing action onthe hair. Also the operation can be performed so as to cut the hairs atthe lowest possible point at which the present commonly used form ofrazor cuts the same.

These objects I accomplish by means of such structure and relativearrangement of the parts as will fully appear by a perusal of thefollowing specification and claim.

In the drawings similar characters of reference indicate correspondingparts in the several views.

Figure l is a side elevation of the complete razor.

Fig. 2 is an end View of the same.

Fi 3 is a sectional view taken on a line X' of Fig. 2.

F ig'. 4 is an enlarged. view of the cuttinBg teeth on the cuttingblades.

v ig. 5 is a sectional view taken on a line ZZ Of ig. 4.

Referring now more particularly to the characters -of reference on thedrawings, I have provided iirst a handle member l which may be of anydesired shape, but preferably cylindricahwhich handle, at its outer end,is provided with a plug 2 having an outwardly projecting lug 2l integraltherewith.

The numeral 3 designates one of the shearing blades which is providedwith small teeth 4 along its lower edge. This blade 3 is fixedstationary with respect to the handle 1 by means of small screws 5engageable with the lug 2*..

Mounted adjacent the blade 3 is a blade 6 which is provided with teeth 7along its lower edge arranged to co-actI with the teeth 4. The teeth 4and 7 will be very minute so that the depth and breadth of the teethl jthe guard 16 and the -to the blade 6 by will be approximately of a sizeequal to the diameter of the average hairs to be cut. The sides of theteeth will slope slightly inwardly from their inner to their outer endsas shown clearly in Fig. 4Q This will cause the c0- acting teeth to cutthe hairs in a sortof shearing action similar to the action of shears,scissors and the like.,

The blade 6 is slidably mounted upon the blade 3 by means of asubstantially V-shaped projecting flange 8 which fits into acorresponding groove 9 cut into the blade 6, such structure permittingthe blade 6 to be moved in a reciprocatin or vibrating movement relativeto the bla e 3. This motion is given meansof the following structure,namely:

The numeral 10 designates the driving shaft which may beopeijated fromany suitable source of power found desirable either manually or'bymechanical means. At its inner end the shaft 10 is provided with a smallpin 11 which is disposed at an eccentric point on thev shaft 10 andprojects centrall through a small block 12 movable in an e ongated slot13 in the member 6. ABy reason of the eccentric relation of the partsthe rotary motion of the shaft 10 imparts a reciprocating or vibratingmotion to the blade 6. This action causes the teeth 7 to move rapidlyadjacent the teeth 4.

The blade 3 is set at right angles to lthe handle member 1 while theoutside vibrating blade 6 is set at a slight angle so that the teeth maybe adjusted to come adjacent each other at their tips only. Thisadjustment is controlled by the screws 14 fastened into the blade 3 andprojecting through a slot 15 provided in the blade 6. By tightening thescrews 14 the teeth may be brought more nearly adjacent each other, theslot 15 allowing of the movement of the blade -6 as desired.

A guard 16 is secured on the blade 3 adjacent the teeth 4 and shown. Thedistance between the device and justed by means of a'screw 17 fastenedinto the blade 3. By 'turning the nut 18 u on the screw 17 the guard maybe positione as desired.

With the rotation of the shaft 10 the z blades together.

teeth 4 may be ad.

and forth so that the shearing teeth 7 coact with the shearing teeth 4to cut the hairs 5 in the manner full described in the preamble to thisspeciiiycation. 4

' By having the blades 3 and 6 independent of and removable from theholder or frame and driving mechanism this allows the cut- 6 ting partswhen worn out to be easily and inexpensively replaced with new ones. Therigid adjustment 'between the blades as shown holds them to their properposition without any tensional strain which would be 6: continuous ifspring tension or similar adjusting means were provided to hold theWhile this specification sets forth particularly the description of arazor having one fixed and one movable blade, still in practice bothblades maybe made movable if desired, so -I do not wish to be understoodas confining myself'to the identical xed and movable blade hereindescribed. Y The main advantage of the invention is in the fact ofhaving the co erating teeth act as shears and be operated) at a highrate of s eed in without pulling the same.

From the foregoing description it will vreadily be seen that I haveroduced such v a device as substantially fulfi) ls the objects of theinvention as set forth herein.

While this specification sets forth in detail the present andv preferredconstruction of the device still in practice such deviations from suchdetail may be resorted to as do not form a. departure from the spirit ofthe invention as defined by the appended claim.

Having thus described my invention what I claim as new and useful anddesire to secure by Letters Patent is:

In combination with a mechanical razor havin a holder, a fixed blade onthe end of the ho der and another blade co-acting therewith and mountedfor reciprocatory movecurves slightly as ment relative thereto,'adjustment screws passing through both blades adjacent their cutting edes whereby the latter are held in adjustale s ac ed relation'with regardto each other, t e rear edges of the blades being swivelly..tongue-and-groovedwith each other.

Invtestimony whereof I alix my signature.

JOHN W. HALTERMAN.

